Follow Navigation Games' method for organizing files within the Maps drive. Follow all naming conventions for the folders, as described on this page.
The file to use for drawing courses is the layout file (called FRAME); this uses the "Latest" ocad file as a background map. (The FRAME file is called "layout" by David L) This means that the FRAME ocad file will always be pointing to the latest version.
"Clone" files are temporary, for editing until ready to publish as "Latest".
To make edits on the OCAD file, first make sure that the current "Latest" version has been archived into the Archive folder.
If the updates will be quick, then you can work in the Latest file.
Alternatively, if the updates will take a long time and you run the risk of needing to use the file before the edits are completed satisfactorily, create a clone of the Latest version (with "Clone" in the name). When the updates are done, rename it to Latest. (Jon C uses this clone approach).
If needed, update the credits in the FRAME file to include those who field checked and made the updates.
When you've completed updates, save a copy to the Archive folder with your initials and date. Feel free to summarize the changes you made in a google doc in the Map folder.